Geology Abbreviations and Acronyms

1. NWL
   North Wales Limestone
2. NWQL
   National Wbter-Quality Laboratory
3. NYB
   Nyboeite
4. NYB
   Nyboite
5. OAM
   Orthoamphibole
6. OASIS
   Open Accessible Space Information System
7. OB GYN
   Obstetrics and Gynaecology
8. OBE
   Operating-Basis Earthquake
9. OBGYN
   Obstetrics and Gynaecology
10. OBM
    Oil-Based Mud
11. OBT
    Orange Blossom Trail
12. OBX
    Outer Banks
13. OC
    Orange Coast
14. OCR
    Office of Coal Research
15. OCR
    Over Consolidation Ratio
16. OCS
    Outer Continental Shelf
17. OCS
    Outer Continental Shelf (oil)
18. OCSG
    Outer Continental Shelf
19. OCSG
    Outer Continental Shelf (Gulf of Mexico)
20. OCT
    Ocean-Continent Transition

Last updated: May 24, 2020 — Total entries: 1,781